Finding the Fourth Proportional to 128,355,323.60, 192,512,326.20 and 37,457,608.40
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Solution
The fourth proportional to 128,355,323.60, 192,512,326.20 and 37,457,608.40 is: 56,180,383.68
Step by Step Solution
- Step 1: Write the proportion equation
128,355,323.60 : 192,512,326.20 = 37,457,608.40 : x - Step 2: Convert to fraction form
128,355,323.60/192,512,326.20 = 37,457,608.40/x - Step 3: Cross multiply
128,355,323.60x = 192,512,326.20 × 37,457,608.40 - Step 4: Simplify right side
128,355,323.60x = 7,211,051,326,972,659 - Step 5: Solve for x
x = 7,211,051,326,972,659/128,355,323.60 - Step 6: Final answer
x = 56,180,383.68
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.